protected virtual void OnElementSet(Shell shell)
{
Profile.FrameBegin();
Profile.FramePartition("Flyout");
_flyoutRenderer = CreateShellFlyoutRenderer();
Profile.FramePartition("Frame");
_frameLayout = new CustomFrameLayout(AndroidContext)
{
LayoutParameters = new LP(LP.MatchParent, LP.MatchParent),
Id = Platform.GenerateViewId(),
};
Profile.FramePartition("SetFitsSystemWindows");
_frameLayout.SetFitsSystemWindows(true);
Profile.FramePartition("AttachFlyout");
_flyoutRenderer.AttachFlyout(this, _frameLayout);
Profile.FramePartition("AddAppearanceObserver");
((IShellController)shell).AddAppearanceObserver(this, shell);
// Previewer Hack
Profile.FramePartition("Previewer Hack");
if (AndroidContext.GetActivity() != null && shell.CurrentItem != null)
{
SwitchFragment(FragmentManager, _frameLayout, shell.CurrentItem, false);
}
Profile.FrameEnd();
}
void UpdateStatusBarColor(ShellAppearance appearance)
{
var activity = AndroidContext.GetActivity();
var window = activity?.Window;
var decorView = window?.DecorView;
int statusBarHeight = AndroidContext.GetStatusBarHeight();
int navigationBarHeight = AndroidContext.GetNavigationBarHeight();
// we are using the split drawable here to avoid GPU overdraw.
// All it really is is a drawable that only draws under the statusbar/bottom bar to make sure
// we dont draw over areas we dont need to. This has very limited benefits considering its
// only saving us a flat color fill BUT it helps people not freak out about overdraw.
AColor color;
if (appearance != null)
{
color = appearance.BackgroundColor.ToPlatform(Color.FromArgb("#03A9F4"));
}
else
{
color = Color.FromArgb("#03A9F4").ToPlatform();
}
if (!(decorView.Background is SplitDrawable splitDrawable) ||
splitDrawable.Color != color || splitDrawable.TopSize != statusBarHeight || splitDrawable.BottomSize != navigationBarHeight)
{
var split = new SplitDrawable(color, statusBarHeight, navigationBarHeight);
decorView.SetBackground(split);
}
}
void UpdateStatusBarColor(ShellAppearance appearance)
{
Profile.FrameBegin("UpdtStatBarClr");
var activity = AndroidContext.GetActivity();
var window = activity?.Window;
var decorView = window?.DecorView;
var resources = AndroidContext.Resources;
int statusBarHeight = 0;
int resourceId = resources.GetIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0)
{
statusBarHeight = resources.GetDimensionPixelSize(resourceId);
}
int navigationBarHeight = 0;
resourceId = resources.GetIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0)
{
navigationBarHeight = resources.GetDimensionPixelSize(resourceId);
}
// TODO Previewer Hack
if (decorView != null)
{
// we are using the split drawable here to avoid GPU overdraw.
// All it really is is a drawable that only draws under the statusbar/bottom bar to make sure
// we dont draw over areas we dont need to. This has very limited benefits considering its
// only saving us a flat color fill BUT it helps people not freak out about overdraw.
AColor color;
if (appearance != null)
{
color = appearance.BackgroundColor.ToAndroid(Color.FromHex("#03A9F4"));
}
else
{
color = Color.FromHex("#03A9F4").ToAndroid();
}
if (!(decorView.Background is SplitDrawable splitDrawable) ||
splitDrawable.Color != color || splitDrawable.TopSize != statusBarHeight || splitDrawable.BottomSize != navigationBarHeight)
{
Profile.FramePartition("Create SplitDrawable");
var split = new SplitDrawable(color, statusBarHeight, navigationBarHeight);
Profile.FramePartition("SetBackground");
decorView.SetBackground(split);
}
}
Profile.FrameEnd("UpdtStatBarClr");
}